The effect of prepubertal calcium carbonate supplementation on skeletal development in Gambian boys-a 12-year follow-up study.
2014
Context: Calcium intake during growth is essential for future bone health but varies widely between individuals and populations. The impact on bone of increasing calcium intake is unknown in a population where low calcium intake, stunting, and delayed puberty are common. Objective: To determine the effect of prepubertal calcium supplementation on mean age at peak velocity for bone growth and mineral accrual. Design and Setting: Prospective follow-up of boys in rural Gambia, West Africa, who had participated in a double-blind, randomized, placebo-controlled trial of calcium supplementation. Participants: Eighty boys, initially aged 8.0–11.9 years, were followed up for 12 years. Interventions: Subjects received 1 year of calcium carbonate supplementation (1000 mg daily, 5 d/wk). Main Outcome Measures: Dual-energy x-ray absorptiometry measurements were carried out for whole body (WB), lumbar spine, and total hip bone mineral content, bone area (BA), and WB lean mass. Super imposition by translation and rotat...
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